How to stamp the motor core? The key to manufacturing a high-quality motor core is to use highly precise metal stamping dies, supplemented by an automated riveting technology process. Subsequently, these carefully designed dies are operated on a high-performance, high-precision stamping machine to ensure that every detail of the core is accurately stamped and formed. The core advantage of this manufacturing process is that it can incomparably maintain the flatness of the core surface and reduce any unnecessary defects. At the same time, it also greatly improves the overall accuracy of the product, laying a solid foundation for the efficient and stable operation of the motor. In short, the combination of this series of precision processes is an indispensable key step in creating high-quality motor cores. How to stamp the motor core? Which lamination process to choose?
Motor core stamping process. Motor core lamination process, which process has the greatest impact on the core?
The first type is loose sheets. Loose sheets are punching sheets. After stamping, no connection is made. They are assembled into cores according to the corresponding heights, and the structure between sheets is loose.
The second type is welding. Welding is to design welding grooves on the core and complete the connection by laser welding or argon arc welding.
The third type is rivets. The rivet lamination process is to punch out rivet holes on the punching sheets, insert rivets to complete the lamination, and the rivet holes are generally designed on the yoke of the core.
The fourth type is self-locking. The self-locking lamination process is completed directly by the die. When the die is opened, the corresponding buckle points are designed and evenly distributed around the core. The connection of the punching sheets is completed by self-locking.
How to stamp the motor core? Different lamination processes correspond to different core bonding forces. Among them, the loose pieces are scattered with each other, so the core bonding force is the worst. The welding has the highest strength and the best bonding force. In addition, the rivet penetrates. The welding seam will have an adverse effect on the magnetic circuit structure of the core. Among them, the welding temperature is higher due to the argon arc welding, so the damage is greater, and the iron loss is also greater.
Motor core stamping method. In the process of custom stamping of stepper motor core, since the material is not uniform, its parallelism will be affected when it is stacked to a certain height. Therefore, we add a rotary mechanism to the mold, which can realize 45°, 90°, and 180° rotation, thereby improving the parallelism, balance, and verticality of the product. The use of large rotation technology has greatly improved the assembly of the product, the process of the motor, the uniformity of the magnetic circuit, and the dynamic balance of the product.
How to stamp the motor core, what problems will be encountered during the stamping process? Another problem in the manufacture of motor cores is uneven stacking. Uneven stacking will cause unqualified slot size, affect the slot full rate, make it difficult to embed the wire, and affect the slot insulation and main insulation, resulting in the instability of the insulation structure. It will also have a certain impact on the assembly process of the core and the casing. The main reasons for the above are the inappropriateness of the stacking tooling and the inaccurate positioning. So how to solve the above problems? First of all, when designing the stamping progressive die, the position of the buckle point must be reasonable. Secondly, the positioning of the shaping die must be accurate. According to different product requirements, we can achieve accurate positioning of each slot, which can avoid uneven stacking.
There are generally the following situations for the problem of product jumping inside the motor core mold parts:
First, the size of the product center precision positioning head is too large, and loose pieces will be brought out during the stamping process. Solution: Slightly reduce the size of the center precision positioning head.
Second, the position of the product center hole is offset, which will also cause the center precision positioning head to squeeze out the product. Solution: Adjust the position of the product center position hole to keep it consistent with the positioning head.
Third, if the tightening force is too large, the product will be squeezed out of the die. Solution: reduce the tightening amount appropriately.
Fourth, the oil content in the cooling oil is too high and the viscosity is large, causing the product to be adsorbed on the punch. Solution: re-adjust the cooling oil with lower viscosity.
Fifth, the mold parts are highly magnetic and will also adsorb the product. Solution: demagnetize the mold parts in time.
Sixth, the cutting depth is not enough. Solution: increase the height of the punch and deepen the cutting depth.
How to stamp the motor core? In the production of modern motor stator and rotor core parts, stamping technology has entered a new era of high precision, high efficiency and long life. This innovation relies on advanced multi-station progressive die technology, which integrates all key processes from primary processing to finished product formation, and realizes a fully automated production process on a high-speed punch press.
The entire production process begins with the precise unwinding of the strips, which are then sent to the leveling machine for detailed leveling to ensure the consistency and accuracy of subsequent processing. Then, the automated feeding device seamlessly connects and accurately delivers the leveled strips to the working area of the mold.
Once in the mold, the strips begin their complex and orderly deformation journey. The precisely designed stations in the mold complete a series of fine operations such as punching, forming, fine trimming, and edge cutting in sequence. Each step is closely connected without manual intervention. It is particularly worth mentioning that the mold also integrates advanced automatic lamination technology, including lamination blanking with twisting and lamination blanking with rotation. These functions not only improve the stacking quality of the core, but also greatly simplify the production process and improve production efficiency.
Finally, after this series of efficient and precise punching processes, the finished motor stator and rotor core parts are smoothly output from the mold. Under the strong drive of the high-speed punching machine, the entire production process has achieved a high degree of automation and continuity, significantly improving production efficiency and product quality, while also reducing labor costs. It is a model of intelligent and automated transformation of modern manufacturing industry. How to stamp the motor core? The above is some knowledge about stamping motor cores.
